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/**
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* Copyright (C) 2017 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.persistence.dto;
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import java.io.Serializable;
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import java.util.Comparator;
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import eu.etaxonomy.cdm.model.name.Rank;
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/**
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* @author k.luther
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* @since 06.12.2017
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*/
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public class SortableTaxonNodeQueryResultComparator implements Serializable, Comparator<SortableTaxonNodeQueryResult>{
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private static final long serialVersionUID = 6000794425983318091L;
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@Override
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public int compare(SortableTaxonNodeQueryResult o1, SortableTaxonNodeQueryResult o2) {
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//same UUID
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if (o1.taxonNodeUuid.equals(o2.taxonNodeUuid)){
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return 0;
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}
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//Rank
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Rank rankName1 = Rank.UNKNOWN_RANK();
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if (o1.nameRank != null){
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rankName1 = o1.nameRank;
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}
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Rank rankName2 = Rank.UNKNOWN_RANK();
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if (o2.nameRank != null){
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rankName2 = o2.nameRank;
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}
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//first compare ranks, if ranks are equal (or both null) compare names or taxon title cache if names are null
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// TODO can't we use OrderedTermBase.performCompareTo here?
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if (rankName1 == null && rankName2 != null){
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return 1;
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}else if(rankName2 == null && rankName1 != null){
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return -1;
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}else if (rankName1 != null && rankName1.isHigher(rankName2)){
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return -1;
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}else if (rankName1 == null && rankName2 == null || rankName1.equals(rankName2)) {
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if (o1.taxonTitleCache != null && o2.taxonTitleCache != null){
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//same rank, order by titleCache
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int result = o1.taxonTitleCache.compareTo(o2.taxonTitleCache);
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if (result == 0){
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return o1.taxonNodeUuid.compareTo(o2.taxonNodeUuid);
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}else{
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return result;
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}
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}
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}else{
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return 1;
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}
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return 0;
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}
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}
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